Finding the Fourth Proportional to 1,441.92, 1,988.90 and 851.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.92 : 1,988.90 = 851.98 : x
2. Step 2: Convert to fraction form
   1,441.92/1,988.90 = 851.98/x
3. Step 3: Cross multiply
   1,441.92x = 1,988.90 × 851.98
4. Step 4: Simplify right side
   1,441.92x = 1,694,503.02
5. Step 5: Solve for x
   x = 1,694,503.02/1,441.92
6. Step 6: Final answer
   x = 1,175.17